cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A381838 k/9 is in this list if A053735(k) < A007949(k), i.e. if digitsum(k, 3) < valuation(k, 3).

Table of values

n a(n)
1 1
2 3
3 6
4 9
5 12
6 18
7 27
8 30
9 36
10 45
11 54
12 63
13 81
14 84
15 90
16 99
17 108
18 117
19 135
20 162
21 171
22 189
23 216
24 243
25 246
26 252
27 261
28 270
29 279
30 297
31 324
32 333
33 351
34 378
35 405
36 432
37 486
38 495
39 513
40 540
41 567
42 594
43 648
44 729
45 732
46 738
47 747
48 756
49 765
50 783
51 810
52 819
53 837
54 864
55 891
56 918
57 972
58 981
59 999

List of values

[1, 3, 6, 9, 12, 18, 27, 30, 36, 45, 54, 63, 81, 84, 90, 99, 108, 117, 135, 162, 171, 189, 216, 243, 246, 252, 261, 270, 279, 297, 324, 333, 351, 378, 405, 432, 486, 495, 513, 540, 567, 594, 648, 729, 732, 738, 747, 756, 765, 783, 810, 819, 837, 864, 891, 918, 972, 981, 999]